We're dividing 84101209 by 686 
Let's see how many times 686 fits into 84101209.

Advancing to step 1:
The number 686 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 686

Step 2:
The number 686 fits into 84 0 times, leaving a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Include the next digit (1) from the dividend after 84, then repeat: 841 / 686

Going ahead to step 3:
The number 686 fits into 841 1 times, leaving a remainder of 155.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 686 from 841 to get 155.
Include the next digit (0) from the dividend after 155, then repeat: 1550 / 686

Going ahead to step 4:
If we divide 1550 by 686, we get 2 and a remainder of 178.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 1372 from 1550 and we're left with 178.
Append the next digit (1) from the dividend to 178 and continue with: 1781 / 686

Going ahead to step 5:
686 can be fit into 1781 2 times, resulting in a remainder of 409.
Use 2 as the next digit of our solution. 
Result so far: 122.0
If we take 1372 away from 1781, we end up with 409.
Take the next digit (2) from the dividend and append it to 409, then repeat: 4092 / 686

Step 6:
686 goes into 4092 5 times with a remainder of 662.
Write down 5 as next digit of the result. 
Result so far: 1225.0
Deduct 3430 from 4092 and we're left with 662.
Include the next digit (0) from the dividend after 662, then repeat: 6620 / 686

Let's proceed to step 7:
686 goes into 6620 9 times with a remainder of 446.
Put 9 as the next digit of the answer. 
Result so far: 12259.0
If we subtract 6174 from 6620, we get 446.
Take the next digit (9) from the dividend and append it to 446, then repeat: 4469 / 686

Let's proceed to step 8:
If we divide 4469 by 686, we get 6 and a remainder of 353.
Write down 6 as next digit of the result. 
Result so far: 122596.0
If we subtract 4116 from 4469, we get 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

On to step 9:
The number 686 fits into 3530 5 times, leaving a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 122596.5
Subtract 3430 from 3530 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 10:
686 can be fit into 1000 1 times, resulting in a remainder of 314.
Record the quotient 1 as the next digit in the result. 
Result so far: 122596.51
If we take 686 away from 1000, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Going ahead to step 11:
If we divide 3140 by 686, we get 4 and a remainder of 396.
Write down 4 as next digit of the result. 
Result so far: 122596.514
If we subtract 2744 from 3140, we get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 12:
When dividing 3960 by 686, we get 5 with a remainder of 530.
The number 5 becomes the next digit in our result. 
Result so far: 122596.5145
Deduct 3430 from 3960 and we're left with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Moving on to step 13:
5300 divided by 686 is 7 with a remainder of 498.
Put 7 as the next digit of the answer. 
Result so far: 122596.51457
Subtracting 4802 from 5300 leaves us with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Moving on to step 14:
The number 686 fits into 4980 7 times, leaving a remainder of 178.
Write down 7 as next digit of the result. 
Result so far: 122596.514577
Subtracting 4802 from 4980 leaves us with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Our division results in 122596.514577 with a remaining 1.78e-05.